Pneumatic controlling device for organs.



H. L. DAVIS. PNEUMATIC CONTROLLING DEVICE FOR ORGANS.

F0. 80l ,571. PATBNTED OCT. 10, 1905.

APPLICATION FILED OCT. 21,1904.

2 SHBET5-SHEET 1.

PATENTED OCT. 10, 1905.

H. L. DAVIS PNEUMATIC CONTROLLING DEVICE FOR ORGANS.

APPLICATION FILED 0CT.21 ,1904.

2 SHEETS-SHEET 2.

I zjhzweo UNITED STATES PATENT OFFICE.

HENRY LIVINGSTONE DAVIS, OF NEI/V YORK, N. Y.

PNEUMATIC CONTROLLING DEVICE FOR ORGANS.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed October 21, 1904. Serial No. 229,399.

lb all whom it may concern:

Be it known that I, HENRY LIVINGSTONE DAvIs, a citizen of the United States, and a resident of the city of New York, borough of The Bronx, in the county and State of New York, have invented a new and Improved Pneumatic Controlling Device for Organs, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved pneumatic controlling device for organs arranged to render the pipevalves exceedingly sensitive, to insure proper opening and closing of the pipes, to render the pipe-valves noiseless in their action by stopping oii the exhaust for the key-action by a diaphragm-valve controlled by high pressure from the draw-stop action.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter, and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views.

Figure l is a sectional side elevation of the improvement, showing the controlling-valve for the organ-pipe in aclosed position, and the draw-stop action and the key-action in off positions. Fig. 2 is a like view of the same, showing the controlling-valve for the organpipe in a closed position, the draw-stop action on, and the key-action off; and Fig. 3 is a similar view of the same, showing the controlling-valve for the organ-pipe open and both the draw-stop action and the key-action In the top of the wind-chest A are arranged valve-seats B, each connected with an organpipe C, and each of the said valve-seats B is adapted to be closed by a valve D, having its reduced stem D secured to a diaphragm D attached to the top of a support E, held within the wind-chest A. A duct F is formed in the support E and has its upper end terminating in a chamber F, over which the diaphragm D is stretched, the lower end of the said duct F being connected with a key-action exhaust G, open to the atmosphere by way of the port G and valve G whenever the key-action is on, (see Fig. 3,) the valve then closing a port G leading to the high-pressure chamber G' of the key-action. Then the key-action is off, (see Figs. 1 and 2,) the exhaust G is connected by way of the port G with the highpressure chamber G the valve G then closing the port G. When the port G is open and the port G closed by the valve G then high pressure from the chamber G" passes through the exhaust G and the duct F when open (see Fig. 2) to press against the under side of the diaphragm D to hold the valve D in a closed position, and when the valve Gr closes the port G and opens the port G then the high pressure is cut ofi from the exhaust G, duct F, and diaphragm D and the pressure in the exhaust and duct F can exhaust by way of the port G to allow the pressure in the wind-chest to act on the top of the diaphragm D to open the valve for the pipe C to speak. The duct F is adapted to be closed at a point between the diaphragm'D and the exhaust G by a valve H, held on a diaphragm H, secured in the support E over a port I, connected with the high-pressure chamber J of the draw-stop action, so that when a high-air pressure passes into the chamber J, the valve H is moved to its seat to close the duct F, and thus disconnect the diaphragm D from the key-action exhaust G. The high-pressure chamber J, as shown, is connected by achannel J and port J with the high-pressure chamber J 3 of the draw-stop action (see Fig. 1) as long as the latter is off, the said channel J connecting with the atmosphere by an exhaust-port J, the latter and the port J 2 being controlled bya valve J connected with a diaphragm J influenced by the pressure in the chamber J When the draw-stop action is off, pressure from the chamber J passes by way of the port J and, duct J into the chamber J to press against the diaphragm H, and thus hold the valve H to its seat to disconnect the duct F and the exhaust G, the key-action then being in off position. (See Fig. 1.) hen the draw-stop action is on and the key-action off, the valve J closes the port J" and opens the port J" to allow the pressure in the chamber J to exhaust, the pressure from the exhaust G and pressurechamber G' now causing the valve H to open. (See Fig. 2.) I/Vhen both the draw-stop action and the key-action are on, (see Fig. 3,) then the valve H is also in an open position. The high-pressure chamber J is connected by a channel K with the duct F at a point between the diaphragm-valve H and the diaphragm D of the valve D, so that air from the chamber J can pass by way of the channel K into the duct F to press against the unthe said organ-pipe, a diaphragm-valve mountder side of the diaphragm D to move the! valveD into a closed position and hold it therein, as plainly indicated in Fig. 1, it being understood that at this time the valve H is in a closed position. The channel K is adapted to be closed by a valve L, held on a diaphragm L, secured to the support E and having its pressure side stretched over a port N, leading to the duct F, between the valve H and the diaphragm D WVhen the valve H is closed, the valve L is opened, and when the valve H is moved into an open position on a reduction of pressure in the chamber J then the valve L moves into a closed position to disconnect the chamber J from the duct F by way of the channel K.

Normally the valve D is held in a closed position on the valve-seat B, as shown in Figs. 1 and 2, by the pressure of the air in the channel F against the under side of the diaphragm D of the valve D and by pressure in the wind-chest A on the under side of the valve D. hen the key for a particular pipe C is actuated and air is exhausted from the duct F, then the diaphragm I) collapses to move the valve D 011' the seat B for the air in the wind-chest A to act on the pipe C to cause the pipe to speak. As soon as the draw-stop action is set in motion and air under pressure passes into the chamber J then the valve H closes the duct F and opens the valve L, so that air passes. from the chamber J by the channel K into the duct F to press against the under side of the diaphragm D to move the valve D back to its seat B to close the connection between the wind-chest A and the pipe C.

From the foregoing it will be seen that the whole controlling mechanism for the pipevalve is in very compact form and the wind for sounding the pipes is immediately below the same and the air-pressure in the windchest holds the pipe-valve firmly to its seat until the valve H is opened.

As the operating parts are pneumatically controlled, the noise incident to the opening and closing of the valves is reduced to a minimum and the valves are not liable to stick.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent-- 1. An organ provided with a wind-chest into which opens the organ-pipe, a support within the said wind-chest and spaced from ed on the said support directly opposite the said organ-pipe to normally close the latter, a duet in the said support and connected with the said diaphragm and the key-action, and a pneumatic controlling-valve in the said support and adapted to close the said duct at a point between the said diaphragm-valve and the key-action, the said controlling-valve being connected with the draw-stop action.

2. An organ provided with a wind-chest into which opens the organ-pipe, a support within the said wind-chest and spaced from the said organ-pipe, a diaphragm-valve mounted on the said support directly opposite the said organ-pipe to normally close the latter, a duet in the said support and connected with the said' diaphragm and the key-action, a pneumatic controlling-valve in the said support and adapted to close the said duet at a point between the said diaphragm-valve and the key-action, the said controlling-valve being connected with the draw stop action, and means for allowing air to pass into the duct at a point between the said valves to restore air-pressure under the diaphragm-valve after the controlling-valve closes the duct to the key-action.

3. An organ provided with a wind-chest into which opens an organ-pipe, a diaphragmvalve within the said chest, normally closing the said pipe, a support for the said valve, within the said wind-chest, having a duct leading from the diaphragm-valve to the keyaction exhaust, a pneumatic controlling device in the said support, adapted to close the said duct, and means for allowing air to pass into the duct ata point between the said valve and the controlling device, to restore airpressure after the controlling device closes the duct to the key-action exhaust.

t. An organ provided with a wind-chest into which opens an organ-pipe, a diaphragmvalve within the said chest, normally closing the said pipe, a support for the said valve, within the said wind-chest and having a duct leading from the diaphragm-valve to the keyaction exhaust, a pneumatic controlling device in the said support, adapted to close the said duet, a high-pressure chamber in the said support, connected with the said pneumatic controlling device and with the draw-stop action, and an auxiliary pneumatic valve controlling a port connecting the said high-pressure chamber with the said duct at a point between the said valve and the controlling device.

5. An organ provided with a wind-chest having a valve-seat leading to an organ-pipe, a support held in the said wind-chest and provided with a duct connected with the exhaust of the key-action, a diaphragm secured to the said support over the end of the said duct, and a Valve adapted to be seated on the said seat and having a reduced stem secured to the said diaphragm for the pressure of the air within the wind-chest to press on the under side of the valve, to hold the latter normally to its seat.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY LIVINGSTONE DAVIS.

Witnesses:

ABEL WEN'rwoRTH ORooK, GEORGE HENRY GARNEY. 

